Spa shell



FIG. 1 is a first perspective view of a spa shell showing our newdesign;

FIG. 2 is a second perspective view of a spa shell showing our newdesign;

FIG. 3 is a top plan view of a spa shell showing our new design;

FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 3;

FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 3;

FIG. 7 is a cross-sectional view taken along 7-7 of FIG. 3;

FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. 3;

FIG. 9 is a cross-sectional view taken along line 9-9 of FIG. 3;

FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 3; and,

FIG. 11 is a cross-sectional view taken along line 11-11 of FIG. 3.

The broken-line disclosure in the views represents portions of thearticle in which the claimed design is embodied, but which form no partof the claimed design.

CLAIM The ornamental design for a spa shell, as shown and described.